# LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.2563.2.2 $> # # # [Note: This file does not mention every change made to the NetBSD source tree. # For an exhaustive list, please subscribe to the `source-changes' mailing list, # or see the mailing list archives. For more information, send a message # containing just the word `help' to `majordomo@NetBSD.org'.] # # ---------------------------------------------------------------------------- # PLEASE USE THE FOLLOWING STYLE WHEN ADDING ITEMS: # # theme: Content ... # more content ... # more content. [developer DATE-FORMAT] # # That's it, one tab to start an item, and two tabs to indent the content. # Also please start the content with a capital and end it with a dot. # # This is very important for the www scripts, otherwise it won't be able to # parse the file and the HTML output will be mangled. # # See htutils/changes/changes2html script for more details. # # ---------------------------------------------------------------------------- Changes from NetBSD 8.0 to NetBSD 9.0: byacc: Update to 20170430. [christos 20170605] vax: Add support for VAXstation 4000 TURBOchannel. [flxd 20170609] wsbell(4): Added console bell support for all speaker devices, not only those attached at pcppi. [nat 20170612] bind: Import version 9.10.5-P1. [christos 20170615] dts: Import dts files from Linux 4.11.5. [jmcneill 20170615] amd64: Support 16TB of PA, and 32TB of kernel VA on the architecture side. [maxv 20170617] expat: Import 2.2.1 (security fixes). [christos 20170617] evbarm: Add support for Allwinner H3 SoC. [jmcneill 20170628] bind: Import version 9.10.5-P2. [christos 20170630] sunxiemac(4): Add support for Allwinner Gigabit Ethernet (EMAC). [jmcneill 20170701] fsdb(8): Add "saveblks" command. [mrg 20170804] wbsio(4): Add support for Winbond W83627DHG-P, W83627SF, W83627UHG, W83667HGB, W83687THF, W83697UG, Nuvoton NCT5104D, NCT6775, NCT6779, NCT6791, NCT6792 and NCT6793. [msaitoh 20170707] evbarm: Add support for Allwinner A83T SoC. [jmcneill 20170707] MAKEDEV(8): Regenerate, documenting lua, dk, plcom, wmcom, hdmicec, mfi, nvme, nvme ns, tpm, and dtrace devices. [sevan 20170710] wbsio(4): Add support for NCT6795. [msaitoh 20170711] lm(4): Add support for NCT5174D, NCT6775F, NCT6779D and NCT679[1235]D. [msaitoh 20170711] evbarm: Add support for NVIDIA Tegra X1 SoC. [jmcneill 20170720] evbarm: Add support for Allwinner A64 SoC. [jmcneill 20170723] gzip(1): Add SIGINFO support. [mrg 20170804] i386: Remove vm86. [maxv 20170812] itesio(4): Add support IT8628E. [hauke 20170814] ichsmb(4): Add support for Intel C3000. [msaitoh 20170817] ismt(4): Add support for Intel C3000. [msaitoh 20170817] powerpc: Bump MAXTSIZ to 128MB for OEA based systems. [sevan 20170818] GMP/MPFR/MPC: Update to 6.1.2, 3.1.5 and 1.0.3. [mrg 20170821] ixg(4), ixv(4): Add C3000 support. Add bypass function support for bypass adapters. [msaitoh 20170830] file(1): Upgraded to 5.32. [christos 20170908] tcpdump(8): Import 4.9.2. [christos 20170908] veriexecgen(8): Drop support for MD5, SHA1, RMD160. [sevan 20170909] itesio(4): Add support IT8728GF and IT877[12]E. [hauke 20170814] evbarm: Add support for Allwinner A13 and R8 SoCs. [jmcneill 20170825] veriexec(4): Drop support for VERIFIED_EXEC_FP_MD5, VERIFIED_EXEC_FP_SHA1, and VERIFIED_EXEC_FP_RMD160 options. [sevan 20170913] acpi(4): Updated ACPICA to 20170831. [christos 20170915] dtrace: Install dtruss, execsnoop, opensnoop, and procsystime from the DTrace Toolkit if DTrace support is enabled. [sevan 20170917] dhcpcd(8): Import dhcpcd-7.0.0-rc3. [roy 20171007] ahcisata(4), siisata(4): Add support for NCQ. [jdolecek 20171007] mvsata(4): Add support for NCQ, and enable ATAPI support. [jdolecek 20171007] OpenSSH: Imported 7.6. [christos 20171007] amd64: Add support for Kernel ASLR. [maxv 20171010] evbarm: Add support for Allwinner H5 SoC. [jmcneill 20171011] tmux(1): Imported 2.6. [christos 20171012] amd64: Add support for SMAP. [maxv 20171017] amd64: Add support for USER_LDT. [maxv 20171021] tzdata Updated to 2017c. [kre 20171024] libc: Update to tzcode2017c. [christos 20171024] bwfm(4): Add driver for Broadcom BCM43xxx "FullMAC" USB wireless adapters. [jmcneill 20171025] kernhist(9): Reworked the export-via-sysctl code to use uintptr_t arguments, PR kern/52639. Requires contemporaneous update of vmstat(1). [pgoyette 20171028] evbarm: Add support for NextThing GR8 SoC. [jmcneill 20171106] acpi(4): Updated ACPICA to 20171110. [christos 20171111] sunxinand(4): Add driver for Allwinner NAND Flash Controller. [jmcneill 20171113] gcc(1): Import GCC 5.5. [mrg 20171113] libtre: Update to the latest git source. [rin 20171117] qemufwcfg(4): Add driver for QEMU Firmware Configuration device. [jmcneill 20171125] gdb(1): Updated to 8.0.1. [christos 20171128] dhcpcd(8): Import dhcpcd-7.0.0-rc4. [roy 20171206] ihidev(4), ims(4): Added drivers for i2c HID mice. [bouyer 20171210] sparc: Fix time goes backwards. [mrg 20180112] lua: Applied 6th bugfix to Lua 5.3.4 from lua.org/bugs.html. [mbalmer 20171213] sstk: Remove the "stack section size change" syscall. [kamil 20171219] sbrk(2): Remove the "data section size change" syscall. [kamil 20171219] ovadvise: Remove the old vadvise syscall header. [kamil 20171219] dhcpcd(8): Import dhcpcd-7.0.0. [roy 20180101] mdnsd(8), dns-sd(1), libdns_sd: import mDNSResponder 878.1. [christos 20180114] cpuctl(8): Add cpuctl identify support for sparc and sparc64. [mrg 20180116] macppc: Enable Veriexec support in the GENERIC kernel. [sevan 20180117] raid(4): Add support for 32-bit on 64-bit kernel. [mrg 20180117] zoneinfo: Import tzdata2018c (skipping 2018a & 2018b). [kre 20180124] libc: Update to tzcode2018c. [christos 20180125] i386: Add support for SMAP. [maxv 20180128] dhcpcd(8): Import dhcpcd-7.0.1. [roy 20180129] gcc(1): Import GCC 6.4. [mrg 20180201] openldap: Import 2.4.45. [christos 20180205] unbound(8): Import 1.6.8. [christos 20180205] nsd: import 4.1.19. [christos 20180209] ddb(4): Introduce dumpstack sysctl for printing a stack trace on panic, enable by default. [sevan 20180217] sdtemp(4): Add Microchp EMC1501, another device ID of Maxim MAX6604 support. [msaitoh 20180222] ichsmb(4): Add support for Intel C620 devices. [msaitoh 20180222] macppc: Enable support for "per-priority cyclical scan" buffer queue strategy. [sevan 20180223] macppc: Enable awacs(4) by default in kernel configs. [sevan 20180224] mdnsd(8), dns-sd(1), libdns_sd: import mDNSResponder 878.30.4. [christos 20180225] macppc: Remove macofcons(4). [sevan 20180226] amd64: Add SVS (Meltdown mitigation). [maxv 20180226] imcsmb(4): For amd64 and i386 on Intel {Ivy,Sandy}bridge and {Broad,Has}well CPUs, enable access to Integrated Memory Controller-based SMBus. [pgoyette 20180228] ichsmb(4): Add Apollo Lake and Gemini Lake devices. [msaitoh 20180302] lm(4): Add NCT6796D support. [msaitoh 20180308] macppc: Enable Bluetooth support by default in GENERIC kernel. [sevan 20180316] tzdata: Updated to 2017d. [kre 20180324] dhcpcd(8): Import 7.0.2. [roy 20180327] aarch64: Add initial support for aarch64. [ryo 20180401] amd64: Add SpectreV2 mitigations, based on IBRS and the DIS_IND bit. [maxv 20180404] dhcpcd(8): Import 7.0.3. [roy 20180406] OpenSSH: Imported 7.7. [christos 20180406] OpenSSL: Imported 1.1.0h. [christos 20180406] ntp: Import ntp 4.2.8p11. [christos 20180406] acpi(4): Updated ACPICA to 20180313. [christos 20180407] dhcp: Import version 4.4.1 (move to MPL). [christos 20180407] bind: Import version 9.10.7. [christos 20180407] x86: Enable retpoline by default (SpectreV2 mitigation). [mrg 20180408] ichsmb(4): Add Intel 300 series chipset support. [msaitoh 20180409] wm(4): Enable I219 support. [msaitoh 20180413] puc(4): Add Intel 300 series chipset support. [msaitoh 20180413] file(1): Upgraded to 5.33. [christos 20180415] netpgp(3lua): Add Lua binding for libnetpgp(3). [sevan 20180429] evbarm: Add support for Allwinner H6 SoC. [jmcneill 20180501] dhcpcd(8): Import 7.0.4. [roy 20180502] midiplay: Add -s option to send all sounds off. [mrg 20180503] libbozohttpd(3): Add the embeddable version of bozohttpd. [sevan 20180503] bozohttpd(3lua): Add Lua binding for libbozohttpd(3lua). [sevan 20180503] tzdata: Updated to 2017e. [kre 20180504] libc: Update to tzcode2018e. [christos 20180504] acpi(4): Updated ACPICA to 20180427. [christos 20180504] gpio(4): Overhauled interrupt support. Added GPIO interrupt capability for Broadcom BCM283x SoCs (e.g. Raspberry Pi). [thorpej 20180519] x86: Add SpectreV4 mitigations. [maxv 20180522] macppc: Enable ipsec(4) and ipsecif(4) support in GENERIC kernel by default. [sevan 20180602] dhcpcd(8): Import 7.0.5b. [roy 20180604] virtio(4): Add MMIO transport and fdt(4) attachment. [jakllsch 20180606] evbarm: Add support for QEMU ARM Virtual Machine ("virt"). [jmcneill 20180614] evbarm: Add support for Rockchip RK3328 SoC. [jmcneill 20180615] dhcpcd(8): Import 7.0.6. [roy 20180621] bpf(4): Add the BPF direction filter (BIOC[GS]DIRECTION). [msaitoh 20180626] gcc(1): add lsan the Leak Sanitizer. [christos 20180626] aarch64: Add support for SMP. [ryo 20180709] viadrm(4): Removed, superseded by viadrmums. [maya 20180710] ssh-agent(1): /usr/pkg/lib* whitelisted by default for PKCS11 related libraries, in place of /usr/local/lib*. [sevan 20180710] x86: Support for -static -pie binaries. [joerg 20180712] kernel: Remove pmc(9) and X86PMC. [maxv 20180714] tprof(4): Revamped. tpfmt(1) merged into tprof(8). [maxv 20180714] kernel: Remove ipkdb(4). [maxv 20180714] evbarm: Add support for ARMv8 performance event monitoring with tprof(4). [jmcneill 20180715] evbarm: Add support for ARMv7 performance event monitoring with tprof(4). [jmcneill 20180715] dhcpcd(8): Import 7.0.7. [roy 20180724] i386: Remove the XEN3_DOM0 and XEN3_DOMU configurations, and drop support for non-PAE-32bit-PV, to leave only PAE-32bit-PV. [maxv 20180726] tea5767radio(4): Add Philips/NXP TEA5767 I2C-controlled stereo FM radio driver. [rkujawa 20180727] UBSan: Imported a clean-room reimplementation of the sanitizer runtime called micro-UBSan. [kamil 20180803] uUBSan: Added support for micro-UBSan (user-UBSan) in MKLIBCSANITIZER. [kamil 20180803] kUBSan: Added support for micro-UBSan (kernel-UBSan) as KUBSAN. [kamil 20180803] lua: Import version 5.3.5. [alnsn 20180804] evbarm: Add driver for ARM GICv3 interrupt controllers. [jmcneill 20180808] kernel: Remove the n8 driver. [maya 20180808] usb(4): Many fixes to abort issues fixed for all USB controllers. [mrg/skrll/riastradh 20180809] nullfs(4): Add 32-bit support. [mrg 20180811] bind: Import version 9.12.2-P1. [christos 20180812] evbarm: Add support for Rockchip RK3399 SoC. [jmcneill 20180812] amd64: Randomize by default all the randomizable VM areas in the kernel. [maxv 20180812] mdocml: Import 1.14.4. [christos 20180814] kernel: Remove etherip(4), replaced by l2tp(4). [maxv 20180814] gnu-efi: Import version 3.0.8. [jmcneill 20180816] OpenSSL: Imported 1.1.0i. [christos 20180818] acpi(4): Updated ACPICA to 20180810. [christos 20180818] dhcpcd(8): Import 7.0.8. [roy 20180820] amd64: Add support for kASan - Kernel Address Sanitizer. [maxv 20180820] evbarm: Add UEFI boot loader for ARM64 platforms. [jmcneill 20180824] kernel: Remove NDIS. [maxv 20180825] mue(4): Add driver for Microchip LAN75xx/LAN78xx (Raspberry Pi 3 B+) from OpenBSD. [rin 20180825] OpenSSH: Imported 7.8. [christos 20180826] rkpmic(4): Add driver for Rockchip RK808 Power Management IC. [jmcneill 20180901] nsd: Import 4.1.24. [christos 20180903] unbound(8): Import 1.7.3. [christos 20180803] libpcap: Import 1.9.0. [christos 20180903] mpfr: Updated to version 4.0.1. [mrg 20180904] mpc: Updated to version 1.1.0. [mrg 20180904] kernel: Remove en(4). [maxv 20180906] kernel: Remove the NATM code. [maxv 20180906] libnv: Imported from FreeBSD. [christos 20180908] i915(4): Pull in support for KabyLake CPUs. [mrg 20180913] usb(4): Handle most cases of early boot USB keyboard. [mrg 20180916] rkpmic(4): Add support for Rockchip RK805 Power Management IC. [jmcneill 20180920] kernel: Remove the ISDN code, including daic(4), iavc(4), isic(4), ifpci(4), ifritz, iwic(4), and all the ISDN-related userland tools. [maxv 20180923] npf(7): Converted to use libnv. [rmind 20180929] ntp: Import ntp 4.2.8p12. [christos 20180929] aarch64: add support for compat_netbsd32(8). [ryo 20181012] newsmips: Add support for NWS-4000. Based on nonaka@'s porting effort back in 2002. [tsutsui 20181014] file(1): Upgraded to 5.35. [christos 20181013] evbarm: Provide generic start code that allows a GENERIC kernel to be used on FDTised boards. [skrll 20181018] tzdata: Updated to 2018f. [kre 20181019] amdccp(4): Add driver for AMD Cryptographic Coprocessor RNG. [jakllsch 20181019] libc: Update to tzcode2018f. [christos 20181019] tzdata: Updated to 2018g. [kre 20181027] libc: Update to tzcode2018g. [christos 20181027] kernel: Add NVMM, the NetBSD virtualization driver, with initial support for x86. [maxv 20181107] aarch64: Add support for kASan. [maxv 20181108] gcc(1): Import GCC 6.5. [mrg 20181103] aarch64: Add support for ARM Server Base System Architecture (SBSA). The SBSA is a hardware system architecture for servers based on 64-bit ARM processors. The Server Base Boot Requirements (SBBR) specification defines a UEFI + ACPI interface for OS bootstrap, which is supported by a combination of a new UEFI bootloader (bootaa64.efi) and the addition of ACPI support in the GENERIC64 kernel config. [jmcneill 20181124] ena(4): Add support for Amazon.com Elastic Network Adapter (ENA). [netbsd 20181130] kernel: Add KLEAK, a feature that can detect kernel information leaks. [maxv 20181202] atactl(8): Add support to automatically detect Micron/Crucial devices and their vendor-specific SMART status values. [mrg 20181205] OpenSSL: Imported 1.1.1a. [christos 20181208] kernel: Remove the lmc(4) driver, and its associated lmcconfig(8) tool. [maxv 20181212] sh(1): Many bug fixes and enhancements. [kre 20181212] amdtemp(4): Add support for AMD family 16h temperature sensors. [is 20181213] evbarm: Add support for NVIDIA Tegra X1 SoC SATA. [skrll 20181214] httpd(8): Update to bozohttpd-20181215. [mrg 20181215] kernel: Remove COMPAT_SVR4 and COMPAT_SVR4_32. [maxv 20181219] sqlite3(1): Import 3.26.0. [christos 20181219] network: Add SIOCSETHERCAP ioctl. [msaitoh 20181221] byacc: Update to 20180609. [christos 20181223] flex(1): Import flex-2.6.4. [christos 20181223] threadpool(9): Added threadpool(9) API. [thorpej 20181224] systat(1): Extend vmstat display for better insight about bufcache. [sevan 20181226] aarch64: Support kernel crash dumps on arm64 platforms. [mrg 20181227] kernel: Remove M_ALIGN, MH_ALIGN, M_COPY_PKTHDR and M_MOVE_PKTHDR. [maxv 20181228] cgdroot: Support mounting boot partition from a wedge labelled cgd.conf. [alnsn 20181229] kernel: Remove COMPAT_IBCS2. [maxv 20181229] tzdata: Updated to 2018h. [kre 20181230] evbmips: Enable support for "per-priority cyclical scan" buffer queue strategy. [sevan 20181230] tzdata: Updated to 2018i. [kre 20181231] tzcode: Updated to 2018i. [christos 20181231] binutils: Updated to FSF binutils 2.31.1. [christos 20181231] services(5), protocols(5): Pull iana-generated services and protocols. [christos 20190103] evbarm: Add SMP support for Allwinner multi-cluster SoCs (A83T, A80). [jmcneill 20190103] wpa: Import wpa_supplicant and hostapd 2.7. [christos 20190104] acpi(4): Updated ACPICA to 20181213. [christos 20190104] tmux(1): Imported 2.8. [christos 20190104] macppc: Update install media and documentation for powerpc 601 machines. [scole 20190107] TrouSerS: Import trousers-0.3.14. [christos 20190107] tpm-tools: Import tpm-tools-1.3.9.1. [christos 20190107] compiler-rt: Import compiler-rt r350590 LLVM sanitizers. [kamil 20190108] bind: Import version 9.13.2-P1. [christos 20190109] crashme(9): Add framework for testing kernel crash dumps. [mrg 20190109] sgimips: Import irisboot, yet another bootloader for pre-ARC sgimips machines. Submitted by Naruaki Etomi via PR port-sgimips/53539. [tsutsui 20190112] npf(7): Major NPF improvements (added support for dynamic NAT address, NETMAP algorithm for static NAT, lock-free lookup for 'ipset' tables, lock-free state lookup, incremental state G/C, etc). [rmind 20190119] gcc(1): Import GCC 7.4. [mrg 20190119] evbarm: Update Amlogic S805 SoC support to use FDT based configuration. [jmcneill 20190119] dhcpcd(8): Import dhcpcd-7.1.0. [roy 20190122] kernel: Remove the satlink driver. [maxv 20190127] kernel: Merged [pgoyette-compat] branch - for details, see src/doc/TODO.compat-module. Includes splitting of the monolithic compat-netbsd module into several version- specific modules, introduction of MP-safe module hook mechanism, and removal of various limitations within the kernel module framework. [pgoyette 20190127] macppc: Include EDID block for Clamshell iBook G3 displays. [sevan 20190128] ure(4): Add driver for Realtek RTL8152/RTL8153 from OpenBSD. [rin 20190206] dhcpcd(8): Import dhcpcd-7.1.1. [roy 20190207] nsd: Import 4.1.26. [prlw1 20190212] macppc: The kernels for the G5s are now built by default. These are currently intended for netbooting via TFTP. [sevan 20190219] bge(4): Add support for BCM5762, BCM5725, BCM5727, BCM57764, BCM57767 and BCM57787. [msaitoh 20190220] bind: Import version 9.13.7. [christos 20190224] evbarm: Add support for Amlogic GXBB family SoCs. [jmcneill 20190225] jemalloc(3): Import 5.1.0. [christos 20190304] kcov(4): Added driver for kernel coverage tracing. [kamil 20190310] mdocml: Import 1.14.5. [christos 20190310] OpenSSL: Imported 1.1.1b. [christos 20190312] ssdfb(4): Added driver for SSD1306 & SH1106 displays. [tnn 20190317] kernel: Remove COMPAT_OSF1. [maxv 20190325] tzdata Updated to 2019a. [kre 20190326] evbarm: Add UEFI bootloader support (bootarm.efi). [jmcneill 20190330] indent(1): Upgraded to the FreeBSD HEAD checkout. [kamil 20190404] tzcode: Updated to 2019a. [christos 20190404] pkg_install: Updated to 20190405. [sevan 20190406] npf(7): Include npf_boot rc script which loads npf.boot.conf to protect host during early stages of startup. [sevan 20190410] dhcpcd(8): Import dhcpcd-7.2.0. [roy 20190418] evbarm: Add support for Amlogic GXL family SoCs. [jmcneill 20190419] OpenSSH: Import 8.0. [christos 20190420] evbarm: Add support for boot configuration (efiboot.plist) and applying device tree overlays to efiboot. [thorpej 20190421] libpthread(3): Import C11 thread support library. [kamil 20190424] dhcpcd(8): Import dhcpcd-7.2.1. [roy 20190426] carp(4): Enabled by default in GENERIC kernel config of all tier 1 & most tier 2 ports. See system specific config otherwise. [sevan 20190426] veriexec(4): Enabled by default in GENERIC kernel config of all tier 1 & most tier 2 ports. See system specific config otherwise. [sevan 20190426] bufq_priocscan(9): Enabled by default in GENERIC kernel config of all tier 1 & most tier 2 ports. See system specific config otherwise. [sevan 20190426] rktsadc(4): New thermal sensor driver for RockChip RK3328 and RK3399 on-CPU sensors. [mrg 20190426] bind: Import version 9.14.1. [christos 20190427] acpi(4): Updated ACPICA to 20190405. [christos 20190428] dhcpcd(8): Import dhcpcd-7.2.2. [roy 20190504] siginfo(2): Ship with MI syscall information of a debugged process for SIGTRAP and si_code TRAP_SCE/TRAP_SCX. [kamil 20190506] installboot(8): Add support for NetBSD/evbarm boards that use u-boot for bootstrap. [thorpej 20190506] ifmedia(4): Extend Ethernet's ifmedia word's subword up to 255. [msaitoh 20190517] mount_9p(8): Initial support for 9P2000.u. [ozaki-r 20190517] file(1): Upgraded to 5.37. [christos 20190522] mount_portal(8): in portal.conf # only introduces a comment at start of line, or after whitespace (start word). [kre 20190523] dts: Import dts files from Linux 5.1.4. [jmcneill 20190525] nsd: Import 4.1.27. [christos 20190525] unbound(8): Import 1.9.1. [christos 20190525] gdb(1): Updated to 8.3. [christos 20190528] evbarm: Add support for the Banana Pi BPI-P2 Zero. [thorpej 20190604] mac68k: Switch page size to 8KB. [jklos 20190606] OpenSSL: Imported 1.1.1c. [christos 20190609] gpt(8): added uuid subcommand to generate new UUIDS. [jnemeth 20190624] dhcpcd(8): Import dhcpcd-7.2.3. [roy 20190626] tzcode: Updated to 2019b. [christos 20190703] piixpm(4): Improve AMD chipset support. [msaitoh 20190713] network: Implement VLAN hardware filter. [msaitoh 20190717] ixg(4),ixv(4): Add VLAN hardware filter support. [msaitoh 20190717] resolvconf(8): Import openresolv-3.9.1. [roy 20190717] amdsmn(4),amdzentemp(4): Add suppor for Ryzen 2xxx and 3xxx. [msaitoh 20190718] mac68k: Enable DMA transfer for SCSI adapters found on 660/840AV. Submitted by Michael Zucca via PR port-mac68k/24883. [rin 20190723] dhcpcd(8): Import dhcpcd-8.0.0. [roy 20190724] tar(1): MKBSDTAR now defaults to yes. [roy 20190724] libarchive: Import libarchive-3.4.0. [joerg 20090724] dhcpcd(8): Import dhcpcd-8.0.1. [roy 20190725] mac68k: Add genfb(4) framebuffer driver. [rin 20190726] dhcpcd(8): Import dhcpcd-8.0.2. [roy 20190730] evbarm: Add support for Amazon Graviton "a1.metal" instances. [jmcneill 20191015]